U1110

U1110-LOST VEHICLE SPEED MESSAGE







Theory of Operation

The PCM receives the vehicle speed signal over the CAN C bus from the Anti-lock Brake Module.

- When Monitored:
Ignition on.

- Set Condition:
The PCM doesn't receive a vehicle speed signal from the Anti-lock brake Module over the CAN C bus.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool read Powertrain DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition Test.

2. U0121-LOST COMMUNICATION WITH ABS MODULE ALSO SET
1. With the scan tool continue reading DTCs.

Is the U0121-LOST COMMUNICATION WITH ABS MODULE also set?

Yes

- Follow the diagnostics for U0121-LOST COMMUNICATION WITH ABS MODULE, U0121.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.